In March 2017, Scott Pruitt, the new administrator of Donald Trump’s Environmental Protection Agency, appeared on CNBC and said that carbon dioxide was not known to be a major factor in climate change. “I would not agree that it’s a primary contributor to the global warming that we see,” Pruitt said, adding, “there’s a tremendous disagreement about the degree of the impact” of “human activity on the climate.”

Based on what?

The next day, a group called Public Employees for Environmental Responsibility (PEER) filed a Freedom of Information Act (FOIA) request with the EPA, asking for any agency documents that Administrator Pruitt may have relied on to come to his conclusions. Since Pruitt’s words contradicted scientific evidence shared by the EPA before the administrator took office, PEER’s request might turn up some recent document that indicated Pruitt had new information.

Instead, the EPA stalled and refused to provide any information to PEER. The employee group then sued the agency.